rated materials (§ 1.2) Q – Are UV-rated materials required in indoor installations under skylights or near windows?
A – As per § 1.2, a UV-resistant rating is not required for markings unless the markings are subjected to unfiltered sunlight or exterior weather conditions. So markings that are inside a building, filtered by glass, do not require UV-resistance. However, owners may voluntarily install UV-resistant materials where windows or skylights are present for the longevity of the materials.
